US5803857A - Continuously variable traction roller transmissions - Google Patents

Continuously variable traction roller transmissions Download PDF

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Publication number
US5803857A
US5803857A US08/799,809 US79980997A US5803857A US 5803857 A US5803857 A US 5803857A US 79980997 A US79980997 A US 79980997A US 5803857 A US5803857 A US 5803857A
Authority
US
United States
Prior art keywords
wire
casing
support members
traction rollers
intersection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US08/799,809
Other languages
English (en)
Inventor
Takeshi Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Assigned to NISSAN MOTOR CO., LTD. reassignment NISSAN MOTOR CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YAMAMOTO, TAKESHI
Application granted granted Critical
Publication of US5803857A publication Critical patent/US5803857A/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H15/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members
    • F16H15/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by friction between rotary members without members having orbital motion
    • F16H15/04—Gearings providing a continuous range of gear ratios
    • F16H15/06—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B
    • F16H15/32—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line
    • F16H15/36—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface
    • F16H15/38—Gearings providing a continuous range of gear ratios in which a member A of uniform effective diameter mounted on a shaft may co-operate with different parts of a member B in which the member B has a curved friction surface formed as a surface of a body of revolution generated by a curve which is neither a circular arc centered on its axis of revolution nor a straight line with concave friction surface, e.g. a hollow toroid surface with two members B having hollow toroid surfaces opposite to each other, the member or members A being adjustably mounted between the surfaces
US08/799,809 1996-02-13 1997-02-13 Continuously variable traction roller transmissions Expired - Fee Related US5803857A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP8025045A JPH09217803A (ja) 1996-02-13 1996-02-13 摩擦車式無段変速機
JP8-025045 1996-02-13

Publications (1)

Publication Number Publication Date
US5803857A true US5803857A (en) 1998-09-08

Family

ID=12154956

Family Applications (1)

Application Number Title Priority Date Filing Date
US08/799,809 Expired - Fee Related US5803857A (en) 1996-02-13 1997-02-13 Continuously variable traction roller transmissions

Country Status (4)

Country Link
US (1) US5803857A (ja)
JP (1) JPH09217803A (ja)
KR (1) KR100240618B1 (ja)
DE (1) DE19705521A1 (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6042498A (en) * 1997-10-23 2000-03-28 Fuji Jukogyo Kabushiki Kaisha Automatic transmission
US6224508B1 (en) * 1998-08-11 2001-05-01 Nissan Motor Co., Ltd. Trunnion of a toroidal continuously variable transmission and manufacturing process thereof
US20030008749A1 (en) * 2001-07-05 2003-01-09 Nissan Motor Co., Ltd. Toroidal continuously-variable transmission
US20030139251A1 (en) * 2000-07-14 2003-07-24 Andelko Vesenjak Infinitely variable friction gear
US20120040794A1 (en) * 2010-08-16 2012-02-16 Brian Schoolcraft Gear scheme for infinitely variable transmission

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3982104B2 (ja) * 1999-03-31 2007-09-26 日本精工株式会社 トロイダル型無段変速機用ローディングカム装置の推力測定方法
US6592491B1 (en) * 1999-04-07 2003-07-15 Nsk Ltd. Toroidal type continuously variable transmission
DE19947851C2 (de) * 1999-04-07 2003-10-16 Nsk Ltd Stufenlos verstellbares Toroidgetriebe
DE10038225A1 (de) * 2000-08-04 2002-02-14 Zahnradfabrik Friedrichshafen Stufenloses Reibradgetriebe
JP4662136B2 (ja) * 2005-05-18 2011-03-30 日本精工株式会社 トロイダル型無段変速機
DE102009026706A1 (de) * 2009-06-04 2010-12-09 Zf Friedrichshafen Ag Lageranordnung für eine Welle

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4694704A (en) * 1986-08-04 1987-09-22 Excelermatic Inc. Infinitely variable traction roller transmission
US5213011A (en) * 1991-04-05 1993-05-25 Mazda Motor Corporation Power transmission device for vehicle
JPH07167240A (ja) * 1993-12-17 1995-07-04 Nissan Motor Co Ltd 摩擦車式無段変速機
US5607372A (en) * 1995-01-13 1997-03-04 The Torax Company, Inc. Co-axial drive for a toroidal drive type transmission

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4694704A (en) * 1986-08-04 1987-09-22 Excelermatic Inc. Infinitely variable traction roller transmission
US5213011A (en) * 1991-04-05 1993-05-25 Mazda Motor Corporation Power transmission device for vehicle
JPH07167240A (ja) * 1993-12-17 1995-07-04 Nissan Motor Co Ltd 摩擦車式無段変速機
US5676618A (en) * 1993-12-17 1997-10-14 Nissan Motor Co., Ltd. Transmission having a friction-roller-type continuously variable transmission subassembly and separate externally connected control pistons
US5607372A (en) * 1995-01-13 1997-03-04 The Torax Company, Inc. Co-axial drive for a toroidal drive type transmission

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6042498A (en) * 1997-10-23 2000-03-28 Fuji Jukogyo Kabushiki Kaisha Automatic transmission
US6224508B1 (en) * 1998-08-11 2001-05-01 Nissan Motor Co., Ltd. Trunnion of a toroidal continuously variable transmission and manufacturing process thereof
US20030139251A1 (en) * 2000-07-14 2003-07-24 Andelko Vesenjak Infinitely variable friction gear
US6800048B2 (en) 2000-07-14 2004-10-05 Zf Friedrichshafen Ag Infinitely variable friction gear
US20030008749A1 (en) * 2001-07-05 2003-01-09 Nissan Motor Co., Ltd. Toroidal continuously-variable transmission
US6800047B2 (en) * 2001-07-05 2004-10-05 Nissan Motor Co., Ltd. Toroidal continuously-variable transmission
US20120040794A1 (en) * 2010-08-16 2012-02-16 Brian Schoolcraft Gear scheme for infinitely variable transmission
CN103109110A (zh) * 2010-08-16 2013-05-15 艾里逊变速箱公司 用于无级变速传动装置的齿轮系统
US9228650B2 (en) * 2010-08-16 2016-01-05 Allison Transmission, Inc. Gear scheme for infinitely variable transmission
CN103109110B (zh) * 2010-08-16 2016-03-23 艾里逊变速箱公司 用于无级变速传动装置的齿轮系统
CN105587838A (zh) * 2010-08-16 2016-05-18 艾里逊变速箱公司 用于无级变速传动装置的齿轮系统
US10253859B2 (en) 2010-08-16 2019-04-09 Allison Transmission, Inc. Gear scheme for infinitely variable transmission

Also Published As

Publication number Publication date
KR100240618B1 (ko) 2000-03-02
JPH09217803A (ja) 1997-08-19
KR970062407A (ko) 1997-09-12
DE19705521A1 (de) 1997-08-21

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AS Assignment

Owner name: NISSAN MOTOR CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YAMAMOTO, TAKESHI;REEL/FRAME:008472/0199

Effective date: 19970122

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

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Year of fee payment: 4

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20060908